: The increase in the frequency and severity of student incivility and unprofessional behaviours in clinical education is of concern.  : To determine the types and frequency of incivility and unprofessional student behaviours, triggers for disruptive behaviour and situations that clinical educators find challenging. An exploratory study using online surveys and interviews investigated perspectives of 71 respondents from two Schools of Nursing within Australia and one in the United States. : Almost all participants had experienced student incivility and unprofessional behaviours in the previous 12 months. A significant antecedent for these behaviours was students receiving feedback perceived to be negative. Clinical educators with experience and qualifications in education reported more incidents and frequency of student incivility and unprofessional behaviour. : Incivility and unprofessionalism is commonly reported. It is recommended that students and faculty act proactively to prevent these behaviours, and that focused training and support to prevent, reduce and manage incivility and unprofessionalism is implemented.